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Houlty1
 Post subject: Problems with alternator
PostPosted:Sat Jul 30, 2016 7:58 pm 
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Small Block

Joined:Wed May 18, 2016 8:46 pm
Posts:9
Car Details:1990 Chevrolet Camaro rs 5.0l v8 5 speed manual
1953 m35a2 deuce & half truck cargo/troop carrier
Location:Corby Northants
I bought my camaro and was told the alternator needed changing as it didn't charge so a new was fitted and the volt meter in the car read about 14 volts
I got in it today and it's show less than 12 volts
Could this really be the alternator already
Any ideas?
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Problems with alternator

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3rdGenmalc
PostPosted:Sat Jul 30, 2016 9:02 pm 
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Big Block
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Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
Did you verify original alternator was at fault, don't take anyone's word for car faults ?

There are videos on YouTube showing you how to check an alternators charging ability and what to do.
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3rdGenmalc
PostPosted:Sun Jul 31, 2016 6:41 pm 
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Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast


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lee52
PostPosted:Sun Jul 31, 2016 7:41 pm 
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Big Block

Joined:Sun Jun 19, 2016 11:26 pm
Posts:59
Car Details:3rd Gen camaro RS 305TBI M5 Ttops
I am assuming you had 14v when running but when you got in the car and it read 12v was that engine running ? you should have 13.8v - 14.2 when running at fast idle and above but when you jump in the car the next day and before you fire up you will have a sub 13v reading (fully charged lead acid is 12.8v)
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Houlty1
PostPosted:Mon Aug 01, 2016 2:25 pm 
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Small Block

Joined:Wed May 18, 2016 8:46 pm
Posts:9
Car Details:1990 Chevrolet Camaro rs 5.0l v8 5 speed manual
1953 m35a2 deuce & half truck cargo/troop carrier
Location:Corby Northants
All fixed it did turn out to be a faulty alternator
Thanks for the advice
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